Substrate Processing Layout With Segmented Vertical Wafer Transfer
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Solution Overview
Problem
Existing substrate processing apparatuses face inefficiencies in transferring and processing semiconductor wafers due to complex and cumbersome designs, leading to increased size and potential contamination risks.
Innovation Solution
A substrate processing apparatus with a carrier block featuring multiple carrier placement parts, a first and second substrate transfer mechanism, and a shuttle mechanism to optimize wafer transfer and processing, reducing size and enhancing efficiency while minimizing contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex transfer mechanism with multiple holders and placement parts is used, then substrate transfer capability is improved, but device complexity increases
Solution Approach 1:
The transfer mechanism is divided into two independent mechanisms: a first substrate transfer mechanism for transferring substrates between the carrier and first substrate placement part, and a second substrate transfer mechanism for transferring substrates between the first and second substrate placement parts. This segmentation allows each mechanism to be optimized for its specific function, reducing overall complexity while maintaining versatile substrate transfer capability.
Solution Approach 2:
The substrate placement parts are arranged in a vertical stack configuration rather than a horizontal arrangement. The first substrate placement part is positioned above the second substrate placement part, utilizing the vertical dimension to reduce the horizontal footprint and simplify the transfer mechanism design.
2Productivity
If multiple substrate placement parts are arranged horizontally, then substrate processing capacity is improved, but occupied area increases
Solution Approach 1:
The substrate placement parts are arranged vertically stacked instead of horizontally. The first substrate placement part is positioned above the second substrate placement part in the vertical direction, allowing multiple substrates to be processed simultaneously while minimizing the horizontal occupied area.
Solution Approach 2:
The substrate placement parts are nested vertically within the same horizontal footprint. The stack of substrate placement parts is positioned within the substrate transfer region, allowing one placement part to be located above another, effectively nesting the processing capacity within a compact vertical space.
3Productivity
If a larger substrate transfer region is provided, then transfer efficiency is improved, but contamination risk increases
Solution Approach 1:
The substrate transfer region is divided into two distinct functional zones: a first substrate transfer mechanism region for carrier-to-placement-part transfer, and a second substrate transfer mechanism region for placement-part-to-placement-part transfer. This segmentation allows each region to be optimized for its specific transfer function, improving efficiency while maintaining controlled access to minimize contamination risk.
Data Source
AI summary
A substrate processing apparatus includes: a carrier block including carrier placement parts and configured to load/unload a substrate into/from a carrier; a processing block provided on one side of the carrier block to process the substrate; first and second carrier placement parts of the carrier placement parts and provided side by side in a front-rear direction in a plan view; substrate placement parts provided to be arranged step by step vertically on one side of a substrate transfer region formed between the first and second carrier placement parts; a first substrate transfer mechanism provided in the substrate transfer region to deliver the substrate between the carrier of the first carrier placement part and a first substrate placement part of the substrate placement parts; and a second substrate transfer mechanism for moving upward and downward so as to deliver the substrate between first and second substrate placement parts.